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Finding the Fourth Proportional to 10,876.88, 15,009.36 and 6,160.88

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Solution

The fourth proportional to 10,876.88, 15,009.36 and 6,160.88 is: 8,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.88 : 15,009.36 = 6,160.88 : x
  2. Step 2: Convert to fraction form
    10,876.88/15,009.36 = 6,160.88/x
  3. Step 3: Cross multiply
    10,876.88x = 15,009.36 × 6,160.88
  4. Step 4: Simplify right side
    10,876.88x = 92,470,865.84
  5. Step 5: Solve for x
    x = 92,470,865.84/10,876.88
  6. Step 6: Final answer
    x = 8,501.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.